Communication switching system



June 27, 1967 R. J. MURPHY ETAL 3,328,534

COMMUNICATION SWITCHING SYSTEM 26 Sheets-Sheet 1 Filed April 23, 1965TEST PANEL DAS DAS MATRIX AND MARKER GROUP TEST GROUP SWITCH MATRIX ANDMARKER GROUP COMMON CONT ROL GROUP LOCAL LOCAL DISTANT SWITCHES FIG.1

LINE AND TRUNK GROUP SWITCH MATRIX MA RKER GROUP COMMON CONTROL GROUP4-WIRE LINE CKT.

INTERTOLL TRUNK CKT.

SUB 55 T' P-B-X SUB SET REMOTE OFFICE I I L l INVENTORS ROBERT J. MURPHYKORE K. SPELLN WILLIAM c. m

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ERNEST J. BONANNO GLENNE SIKORS K ATTY[// g EDWARD J. FRANK B.

June 27, 1967 R. J. MURPHY ETAL 3,328,534

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June 1967 R. J. MURPHY ETAL 3,328,534

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COMMUNICATION SWITCHING SYSTEM 26 Sheets-Sheet 6 Filed April 23, 1965than. than.

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COMMUNICATION SWITCHING SYSTEM 26 Sheets-Sheet 10 Filed April 23, 1965-mwFZEa mus-E. $53

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June 27, 1967 R. J. MURPHY ETAL COMMUNICATION SWITCHING SYSTEM FiledApril 25, 1965 IDENTITY SECTION 26 Sheets-Sheet 14 MATRIX CONNECTIONSECTION CLEAR OPERATE CORREED TO CONNHY CONNECT LINK I CORREEDS 8 TESTCONTACTS 525 ROUTINER $26 SPECIAL FIRE 520w OPERATION PRE'EMPT) CONF.

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ANS. TO ROUTINER J1me 1967 R. J. MURPHY ETAL 3,328,534

COMMUNICATION S WITCHING SYSTEM Fisl7eo il April 23, 1965 26Sheets-Sheet l5 LINE TRANS. EQUIP.

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June 1967 R. J. MURPHY ETAL 3,328,534

COMMUNICATION SWITCHING SYSTEM Filed April 23, 1965 26 Sheets-Sheet l 7,

June 27, 1967 R, J. MURPHY ETAL COMMUNICATION SWITCHING SYSTEM 26Sheets-Sheet 18 Filed April 23, 1965 50f"? 000F101 :v ZOhQ/ QTZEUILOOOPl/ 8-85/1 p .5 h :6 92 96 momm 52o momL Go x B2 5a mom. 89

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COMMUNICATION SWITCHING SYSTEM 26 Sheets-Sheet 20 Filed April 23, 1965

1. A COMMUNICATION SWITCHING SYSTEM COMPRISING: A SWITCHING NETWORKHAVING TWO SIDES, A PLURALITY OF TERMINATING UNITS CONNECTED TO SAIDNETWORK, EACH TERMINATING UNIT HAVING AN APPEARANCE ON BOTH SIDES OF THENETWORK, A MARKER APPARATUS FOR CONTROLLING THE ESTABLISHMENT OFCONNECTIONS BETWEEN ANY TWO OF SAID TERMINATING UNITS VIA SAID NETWORK,A PLURALITY OF LINES CONNECTED TO INDIVIDUAL ONES OF CERTAIN OF SAIDTERMINATING UNITS, A PLURALITY OF REGISTER MEANS ASSOCIATED WITHINDIVIDUAL ONES OF OTHER OF SAID TERMINATING UNITS, A PLURALITY OFSENDER MEANS ASSOCIATED WITH INDIVIDUAL ONES OF STILL OTHERS OF SAIDTERMINATING UNITS, COMMON TRANSLATING MEANS; MEANS RESPONSIVE TO ACALLING LINE SERVICE REQUEST SIGNAL FROM A FIRST OF SAID LINES TOIDENTIFY THE CALLING-LINE TERMINATING UNIT AND MEANS INCLUDING THEMARKER APPARATUS TO CAUSE A CONNECTION TO BE ESTABLISHED THROUGH SAIDNETWORK BETWEEN THE TERMINATING UNIT OF THE CALLING LINE AND THETERMINATING UNIT OF ONE OF SAID REGISTER MEANS; MEANS TO RECEIVE CALLSIGNALS DESIGNATING THE CALLED LINE DIRECTORY NUMBER AS TRANSMITTED OVERSAID FIRST LINE VIA SAID REGISTER TERMINATING UNIT, AND MEANS TOTRANSLATE UNDER THE CONTROL OF SAID TRANSLATING MEANS AT LEAST A PART OFSAID DIRECTORY INFORMATION INTO CORRESPONDING EQUIPMENT LOCATIONINFORMATION WHICH INCLUDES THE IDENTITY OF A SECOND ONE OF SAID LINETERMINATING UNITS;